Regeneration recycling method of alkaline etching liquid

The invention discloses a regeneration recycling method of alkaline etching liquid. The regeneration recycling method is characterized by comprising the following steps: S1, collecting waste alkaline etching liquid; S2, carrying out extraction and back extraction treatment; S3, carrying out electrolytic copper extraction; S4, regenerating the extraction mother liquor; and S5, carrying out cyclic utilization. The regeneration recycling method of the alkaline etching liquid is simple in process, low in equipment investment and capable of safely and efficiently achieving recycling of the waste liquid, turning waste into wealth and achieving synchronous improvement of economic benefits, social benefits and ecological benefits, and an operation control method is adopted. By adding an alkaline etching solution regeneration additive, the comprehensive performance of the regeneration alkaline etching liquid can be effectively enhanced, the production cost of enterprises is effectively reduced, elemental copper can be